A potential galaxy threshing system in the COSMOS field

S. S. Sasaki, Y. Taniguchi, N. Scoville, B. Mobasher, H. Aussel, D. B. Sanders, A. Koekemoer, M. Ajiki, Y. Komiyama, S. Miyazaki, N. Kaifu, H. Karoji, S. Okamura, N. Arimoto, K. Ohta, Y. Shioya, T. Murayama, T. Nagao, J. Koda, L. HainlineA. Renzini, M. Giavalisco, O. Le Fèvre, C. Impey, M. Elvis, S. Lilly, M. Rich, E. Schinnerer, K. Sheth

研究成果: Article査読

6 被引用数 (Scopus)

抄録

We report on the discovery of a new potential galaxy threshing system in the COSMOS 2 square degree field using the prime-focus camera, Suprime-Cam, on the 8.2 m Subaru Telescope. This system consists of a giant elliptical galaxy with M v ≈ -21.6 and a tidally disrupted satellite galaxy with M v PS -17.7 at a photometric redshift of z ≈ 0.08. This redshift is consistent with the spectroscopic redshift of 0.079 for the giant elliptical galaxy obtained from the Sloan Digital Sky Survey (SDSS) archive. The luminosity masses of the two galaxies are 3.7 × 10 12 and 3.7 × 10 9 M , respectively. The distance between the two galaxies is greater than 100 kpc. The two tidal tails emanating from the satellite galaxy extend over 150 kpc. This system would be the second well-defined galaxy threshing system found so far.

本文言語English
ページ(範囲)511-517
ページ数7
ジャーナルAstrophysical Journal, Supplement Series
172
1
DOI
出版ステータスPublished - 2007

ASJC Scopus subject areas

  • 天文学と天体物理学
  • 宇宙惑星科学

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